Home / 21,185.31-31,765.51-8,038.61

Finding the Fourth Proportional to 21,185.31, 31,765.51 and 8,038.61

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Solution

The fourth proportional to 21,185.31, 31,765.51 and 8,038.61 is: 12,053.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.31 : 31,765.51 = 8,038.61 : x
  2. Step 2: Convert to fraction form
    21,185.31/31,765.51 = 8,038.61/x
  3. Step 3: Cross multiply
    21,185.31x = 31,765.51 × 8,038.61
  4. Step 4: Simplify right side
    21,185.31x = 255,350,516.68
  5. Step 5: Solve for x
    x = 255,350,516.68/21,185.31
  6. Step 6: Final answer
    x = 12,053.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.